That's for you to decide, based on your other values.
Some people value adventure and risk-taking in order to bring about new rewards and feel proud of them. They accept the risks which could shorten their life.
Other people want to live a long time and see a lot of things. They would not be risk-takers and thus would be happier with a longer life.
Does this make sense?
Please define 'lived as well as possible' with out reference to objectivist concepts or philosophies. Also please demonstrate objectively which is better, a life well lived or a one lived as long as possible, and in the the situation which maximizing both are impossible, the ratio which maximizes the value of life.
Alternatively please refrain from stating opinions as unqualified fact.